Elasticsearch-从过滤器开始? [英] Elasticsearch - startswith filter?

问题描述

我试图在Elasticsearch中获得一个简单的startswith功能.例如，我希望查询"char"匹配"charlotte"，但我不希望它匹配"dacharlotte".使用edgeNgram过滤器可以得到后一个结果.我只希望它匹配以查询词开头的结果，而不只是将它们包含在其中.

I am trying to get a simple startswith functionality in Elasticsearch. For example, I want the query "char" to match "charlotte", but I don't want it to match "dacharlotte". Using an edgeNgram filter gave me the latter result. I only want it to match results that START with the query terms, not just have them in them.

推荐答案

最简单的方法是使用前缀查询:

The simplest way to do what you want would be to use the prefix query:

{
    "query": {
         "prefix":{ "name" : "char" }
     }
}

http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-prefix-query.html

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